Building an On-Chain Reputation System with Soulbound Tokens

Building an On-Chain Reputation System with Soulbound Tokens

3,088 View

What if your wallet could carry a verifiable, tamper-proof
reputation that follows you across the entire Web3 ecosystem?
That's exactly what Soulbound Tokens (SBTs) make possible.

In this video, we dive deep into how to design and build an
on-chain reputation system using non-transferable tokens
unlocking new use cases like credentialing, identity,
governance, and trust in decentralized applications.

What You'll Learn:
- What Soulbound Tokens (SBTs) are and how they differ from NFTs
- The concept of "Soulbound" introduced by Vitalik Buterin
- Why non-transferability matters for reputation
- Designing a reputation system architecture
- Writing a Soulbound Token contract in Solidity
- Implementing non-transferable ERC721 logic
- Adding reputation scoring and attestation logic
- Issuing, revoking, and updating SBTs
- Using SBTs for DAOs, KYC, credentials, and identity
- Privacy considerations and zero-knowledge proofs
- Deploying to a testnet and verifying on Etherscan
- Real-world projects already using SBTs

Tools & Tech Used:
- Solidity
- OpenZeppelin Contracts
- Hardhat
- ERC721 (modified for non-transferability)
- EIP-5114 / EIP-4973 references
- MetaMask
- Sepolia Testnet
- Etherscan

SUBSCRIBE for more Solidity & Web3 dev tutorials
LIKE if this helped you understand SBTs
COMMENT what you'd build with on-chain reputation

DISCLAIMER: This video is for educational purposes only and is
not financial or legal advice. Implementing identity or
reputation systems may have privacy, legal, and regulatory
implications. Always DYOR and consult professionals before
deploying to production.

Music track: memories by massobeats
Source: https://freetouse.com/music

#SoulboundTokens #Web3 #SmartContracts

soulbound tokens, sbt, soulbound token tutorial,
on-chain reputation, web3 identity, decentralized identity,
non-transferable nft, erc721 soulbound, eip-5114, eip-4973,
solidity tutorial, smart contract tutorial, openzeppelin,
hardhat, ethereum development, web3 development,
decentralized society, desoc, vitalik buterin,
reputation system, blockchain credentials,
on-chain credentials, dao reputation, web3 kyc,
zero knowledge proofs, zk identity, attestation,
verifiable credentials, sbt tutorial, blockchain identity,
soulbound nft, dapp development, ethereum smart contracts,
crypto reputation, web3 tutorial